LG -ID3100 Service Manual page 47

LG-ID3100
Checking Flow : Back Light
START
No
Check the TP2 of U303,
Check & replace QSC
+VPWR
Yes
No
Re-Soldering or
Does U303 work Properly?
Replace U303
Yes
No
Check the signal level at
Replace QSC
TP3(LCD_BACK_EN)=high?
Yes
LCD backlight will
work properly
LGE
LG Electronics Inc.
45/57 LGE Internal Use Only